Where does “draastui” come from?

draastui (Ingrian) comes from Russian здравствуй, from Russian здравствовать, from Russian -ствова́ть, from Russian -ство́, from Proto-Slavic -ьstvo, from Proto-Balto-Slavic -istwas.

Ancestry of “draastui”, step by step

StepLanguageWordMeaning
1Russianздравствуйhello
2Russianздравствоватьto be well, to prosper, to thrive
3Russian-ствова́тьSuffix used to form verbs from nouns, and sometimes from adjectives
4Russian-ство́suffix appended to nouns and adjectives to create a neuter noun, usually an abstract noun denoting a relation, social status, scientific discipline, quality or state: -hood, -ness, -ship, -ity, -y
5Proto-Slavic-ьstvoDeadjectival, forming nouns denoting a condition...
6Proto-Balto-Slavic-istwas
Every word from Proto-Balto-Slavic -istwasEvery word from Russian -ство́Every word from Proto-Slavic -ьstvo